A.a present | B.a candle | C.a cookie | D.a balloon |
E.presents | F.candles | G.cookies H. balloons |
![](http://static.xuejinqu.com/qimg/45c/45c9f81782290c86284967f6d19810e9.png)
![](http://static.xuejinqu.com/qimg/b99/b993fc30df4904d353ba9396f4cbf227.png)
3.
![](http://static.xuejinqu.com/qimg/0c5/0c5652c18486abef45f7c03296ed6c05.png)
![](http://static.xuejinqu.com/qimg/2ce/2cec276cd39fdfece861ac689647ecbd.png)
5.
![](http://static.xuejinqu.com/qimg/37c/37cad9de32969414c76753090159efb4.png)
![](http://static.xuejinqu.com/qimg/564/564c18711ec51235f127f9ac188aa833.png)
7.
![](http://static.xuejinqu.com/qimg/1bc/1bcf61cedde53ef24fe1ed80899dccb1.png)
![](http://static.xuejinqu.com/qimg/ef7/ef7f88fc8eda0c46d0447e2823483694.png)
![](http://static.xuejinqu.com/images/y-prise.png)
同类型试题
![](http://static.xuejinqu.com/images/medal.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
![](http://static.xuejinqu.com/images/avatar.png)
![](http://static.xuejinqu.com/images/avatar.png)